Vacabulary
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| Periodic Law | States that the elements are arranged by increasing atomic number, there is a periodic repetition of their properties
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| Group | A vertical column of element in the periodic table arranged in order of increasing atomic number; also called a family
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| Period | A horizontal row of elements in the modern periodic table
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| Representative Element | Elements from groups 1, 2, and 13-18 in the modern periodic table, possessing a wide range of chemical and physical properties
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| Transition Element | Elements in groups 3-12 of the modern periodic table and are further divided into transition metals and inner transition
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| Metal | An element that is solid at room temperature, a good conductor of heat nad electricity, and generally is shiny; most metals are ductile and malleable
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| Alkaline Earth Metal | Group 2 elements in the modern periodic table and are highly reactive
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| Transition Metal | Elements in groups 3-12 that is contained in the 9-block of the periodic table and, with some exceptions, is characterized by a filled outermost s orbital of energy level n, and filled or partially filled d orbitals of energy level n-1
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| Inner Transition Metal | A type of group B element that is contained in the f-block of the periodic table and is characterized by a filled outermost orbital, and filled or partially filled 4f and 5f orbitals
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| Lanthanide Series | In the periodic table, the f-block elements from period 6 hat follow the element lanthanum
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| Actinide Series | In the periodic table, the f-block elements from period 7 that follow the element actinium
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| Nonmetal | Elements that are generally gases or dull, brittle solids that are poor conductors of heat and electricity
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| Halogen | A highly reactive group 17 element
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| Noble Gas | An extremely unreactive group 18 elecment
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| Metalloid | An element that has physical and chemical properties of both metals and nonmetals
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| Valance Electron | electron in an atom's outermost orbitals; determines the chemical properties of an atom
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| Principle Energy Level | the major energy level of an atom
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| Ion | An atom or bonded group of atoms with a positive or negative charge
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| Ionization Energy | The energy required to remove an electron from a gaseous atom; generally increases in moving from left-to-right across a period and decreases in moving down a group
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| Octet Rule | States that atoms lose, gain, or share electrons in order to acquire the stable electron configuration of a noble gas
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| Electronegativity | Indicates the relative ability of an element's atoms to attract electrons in a chemical bond
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| Atomic Number | the number of protons in an atom
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Created by:
Emmelee
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